25428788 has 24 divisors (see below), whose sum is σ = 55481664. Its totient is φ = 9907200.

The previous prime is 25428779. The next prime is 25428811. The reversal of 25428788 is 88782452.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40973 + ... + 41588.

It is an arithmetic number, because the mean of its divisors is an integer number (2311736).

Almost surely, 2^25428788 is an apocalyptic number.

25428788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25428788 is an abundant number, since it is smaller than the sum of its proper divisors (30052876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25428788 is a wasteful number, since it uses less digits than its factorization.

25428788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82583 (or 82581 counting only the distinct ones).

The product of its digits is 286720, while the sum is 44.

The square root of 25428788 is about 5042.6965008812. The cubic root of 25428788 is about 294.0640180212.

The spelling of 25428788 in words is "twenty-five million, four hundred twenty-eight thousand, seven hundred eighty-eight".